Amplitude modulated, by M1, Earth's oscillating (T = 1 day) electric field triggered by K1 tidal waves. Its relation to the occurrence time of large EQs

TL;DR

This paper proposes a piezoelectric mechanism driven by M1 and K1 tidal components that explains amplitude variations in Earth's electric field and links these variations to the timing of large earthquakes.

Contribution

It introduces a novel piezoelectric model triggered by tidal components to explain electric field variations and earthquake timing predictions.

Findings

Electric field amplitude peaks align with M1 tidal peaks.

Electric field variations are linked to pre-earthquake strain conditions.

Real data from Greece supports the proposed mechanism.

Abstract

Starting from the observation that quite often the Earth's oscillating electric field varies in amplitude, a mechanism is postulated that accounts for these observations. That mechanism is the piezoelectric one driven by the M1 and K1 tidal components. It is demonstrated how the system: piezoelectricity triggered in the lithosphere - M1 and K1 tidal components is activated and produces the amplitude modulated Earth's oscillating electric field. This procedure is linked to the strain load conditions met in the seismogenic area before the occurrence of a large EQ. Peaks of the oscillating Earth's electric field are tightly connected to the M1 peak tidal component and to the timing of the occurrence of large EQs. Typical examples from real recordings of the Earth's oscillating electric field, recorded by the ATH (Greece) monitoring site, are given in order to verify the postulated detailed piezoelectric mechanism.